9 Putin critics who mysteriously died since 2004

Boris Nemtsov, a former deputy prime minister and leading Russian opposition politician, was the latest in a long series of Kremlin critics to die under strange circumstances in the past 10 years.

Some of them were murdered under everyone's eyes, like Anna Politkovskaya, a journalist who was investigating the Russian-Chechen conflict, or Alexander Litvinenko, a former FSB agent who was poisoned in London, where he had fled looking for asylum. Others, like former Russian kingmaker Boris Berezovsky, were found dead in an apparent suicide.

Most of these cases remain unsolved, though they share a common theme: The deceased were critical of Russian President Vladimir Putin and his government.

Agence France-Presse put together a graphic of a decade of killings and mysterious deaths.